Preheat your oven to 350°F (180°C) and line two baking sheets with parchment paper.

In a medium bowl, whisk together 2 cups of all-purpose flour, 1 teaspoon of baking soda, and ½ teaspoon of salt.

In a large mixing bowl, beat together ½ cup of unsalted butter, ½ cup of granulated sugar, and ½ cup of light brown sugar until smooth.

Add in one large egg and 1 teaspoon of vanilla extract, mixing until combined.

Gradually mix in the dry ingredient mixture until just combined; do not overmix.

Divide the dough into three portions, adding cocoa powder to one, strawberry powder (and food coloring) to another, and leaving the third as vanilla.

Roll each colored dough portion into small cylinders and layer in the order of chocolate, vanilla, and strawberry.

Roll in granulated sugar and place on prepared baking sheets.

Bake for 7-9 minutes until edges are lightly golden.

Let cool on baking sheets for 5 minutes before transferring to wire racks.